Publications

Outreach
   
Phd Theses
   
Journal Publications

Outreach

Why are rainbows round?
Ben Buchler
The Conversation (2017)

Hold it right there: how (and why) to stop light in its tracks
Jesse Everett
The Conversation 2016

A video about stationary light
Geoff Campbell and Ben Buchler
Quantum computing a step closer to reality

Levitation is just part of the power of pushy light
Ben Buchler
The Conversation 2014

Teleportation just got easier – but not for you, unfortunately
Ben Buchler
The Conversation 2013

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PhD theses from the group

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Journal Publications

2019

N. D. Truong, J. Y. Haw, S. M. Assad, P. K. Lam and O. Kavehei
Machine Learning Cryptanalysis of a Quantum Random Number Generator
IEEE Transactions on Information Forensics and Security 14, 403-414 (2019)

Entanglement properties of a measurement-based entanglement distillation experiment
Hao Jeng, Spyros Tserkis, Jing Yan Haw, Helen M. Chrzanowski, Jiri Janousek, Timothy C. Ralph, Ping Koy Lam, and Syed M. Assad
Physical Review A 99, 042304 (2019)

Radiation tolerance of two-dimensional material-based devices for space applications
Tobias Vogl, Kabilan Sripathy, Ankur Sharma, Prithvi Reddy, James Sullivan, Joshua R. Machacek, Linglong Zhang, Fouad Karouta, Ben C. Buchler, Marcus W. Doherty, Yuerui Lu & Ping Koy Lam
Nature Communications 10, 1202 (2019)

2018

Multiparameter optimisation of a magneto-optical trap using deep learning A. D. Tranter, H. J. Slatyer, M. R. Hush, A. C. Leung, J. L. Everett, K. V. Paul, P. Vernaz-Gris, P. K. Lam, B. C. Buchler & G. T. Campbell Nature Communications 9, 4360 (2018)

Interference of Single Photons Emitted by Entangled Atoms in Free Space
G. Araneda, D. B. Higginbottom, L. Slodička, Y. Colombe, and R. Blatt
Physical Review Letters 120, 193603 (2018)

Fabrication of ultrahigh-precision hemispherical mirrors for quantum-optics applications
Daniel B. Higginbottom, Geoff T. Campbell, Gabriel Araneda, Fengzhou Fang, Yves Colombe, Ben C. Buchler & Ping Koy Lam
Scientific Reports 8, 221 (2018)

Joint measurement of multiple noncommuting parameters
Jiamin Li, Yuhong Liu, Liang Cui, Nan Huo, Syed M. Assad, Xiaoying Li, and Z. Y. Ou
Physical Review A 97, 052127 (2018)

Violation of Bell’s Inequality Using Continuous Variable Measurements
Oliver Thearle, Jiri Janousek, Seiji Armstrong, Sara Hosseini, Melanie Schünemann (Mraz), Syed Assad, Thomas Symul, Matthew R. James, Elanor Huntington, Timothy C. Ralph, and Ping Koy Lam
Physical Review Letters 120, 040406 (2018)

Ultimate precision of joint quadrature parameter estimation with a Gaussian probe
Mark Bradshaw, Ping Koy Lam, and Syed M. Assad
Physical Review A 97, 012106 (2018)

Fabrication and deterministic transfer of high-quality quantum emitters in hexagonal boron nitride
T Vogl, G Campbell, BC Buchler, Y Lu, PK Lam
ACS Photonics 5, 2305-2312 (2018)

High-performance Raman memory with spatio-temporal reversal
Pierre Vernaz-Gris, Aaron D. Tranter, Jesse L. Everett, Anthony C. Leung, Karun V. Paul, Geoff T. Campbell, Ping Koy Lam, and Ben C. Buchler
Optics Express 26, 12424-12431 (2018)

Joint measurement of multiple noncommuting parameters
Jiamin Li, Yuhong Liu, Liang Cui, Nan Huo, Syed M. Assad, Xiaoying Li, and Z. Y. Ou
Physical Review A 97, 052127 (2018)

Loss-tolerant quantum dense metrology with SU(1,1) interferometer
Yuhong Liu, Jiamin Li, Liang Cui, Nan Huo, Syed M. Assad, Xiaoying Li, and Z. Y. Ou
Optics Express 26, 27705-27715 (2018)

Time-reversed and coherently enhanced memory: A single-mode quantum atom-optic memory without a cavity
J. L. Everett, P. Vernaz-Gris, G. T. Campbell, A. D. Tranter, K. V. Paul, A. C. Leung, P. K. Lam, and B. C. Buchler
Physical Review A 98, 063846 (2018)

2017

A tight Cramér–Rao bound for joint parameter estimation with a pure two-mode squeezed probe
Mark Bradshaw, Syed M. Assad and Ping Koy Lam
Physics Letters A, 381, 2598--2607 (2017)

Direct imaging of slow, stored and stationary EIT polaritons
Geoff T Campbell, Young-Wook Cho, Jian Su, Jesse Everett, Nicholas Robins, Ping Koy Lam and Ben Buchler
Quantum Science and Technology, 2, 034010 (2017).

Enhanced photothermal cooling of nanowires
G Guccione, M Hosseini, A Mirzaei, H J Slatyer, B C Buchler and P K Lam
Quantum Science and Technology, 2, 034005 (2017)

Measurement-based generation of shaped single photons and coherent state superpositions in optical cavities
Ruvindha L. Lecamwasam, Michael R. Hush, Matthew R. James, and André R. R. Carvalho
Physical Review A 95, 013828 (2017)

Optomechanically induced carrier-envelope-phase-dependent effects and their analytical solutions
Jinyong Ma, Jinghui Gan, Giovanni Guccione, Geoff T. Campbell, Ben C. Buchler, Xinyou Lü, Ying Wu, and Ping Koy Lam
Physical Review A 95, 063802 (2017)

Room temperature single photon source using fiber-integrated hexagonal boron nitride
Tobias Vogl, Yuerui Lu and Ping Koy Lam
Journal of Physics D: Applied Physics 50, 295101 (2017)

Quantum enhancement of signal-to-noise ratio with a heralded linear amplifier
Jie Zhao, Josephine Dias, Jing Yan Haw, Thomas Symul, Mark Bradshaw, Rémi Blandino, Timothy Ralph, Syed M. Assad, and Ping Koy Lam
Optica 4, 1421-1428 (2017)

Characterization of a measurement-based noiseless linear amplifier and its applications
Jie Zhao, Jing Yan Haw, Thomas Symul, Ping Koy Lam, and Syed M. Assad
Physical Review A 96, 012319 (2017)

Dynamical observations of self-stabilizing stationary light
J. L. Everett,    G. T. Campbell,    Y.-W. Cho,    P. Vernaz-Gris,    D.B. Higginbottom,    O. Pinel,    N. P. Robins,    P. K. Lam    & B. C. Buchler
Nature Physics 13, 68–73 (2017)  

Tuning quantum measurements to control chaos
Eastman J, Hope J, Ribeiro de Carvalho A
Scientific Reports 7, 44684 (2017)

Characterization of a measurement-based noiseless linear amplifier and its applications
Zhao J, Haw J, Symul T, Lam P, Assad S
Physical Review A, 96, 012319, (2017)

Phase estimation of coherent states with a noiseless linear amplifier
Assad S, Bradshaw M, Lam P
International Journal of Quantum Information 15, 1750009, (2017)

Overarching framework between Gaussian quantum discord and Gaussian quantum illumination
Bradshaw M, Assad S, Haw J, Tan S, Lam P, Gu M
Physical Review A, 95, 022333 (2017)

Compact flexible multi-pass rotary delay line using spinning micro-machined mirrors
R Fleddermann, WM Lee, K Huang, GT Campbell, PK Lam, JH Chow
Scientific reports 7 , 9299 (2017)

2016

Pure single photons from a trapped atom source
Higginbottom D, Slodicka L, Araneda G, Lachman L, Filip R, Hennrich M, Blatt R
New Journal of Physics 18, 9 (2016)

Surpassing the no-cloning limit with a heralded hybrid linear amplifier for coherent states
Haw J, Zhao J, Dias J, Assad S, Bradshaw M, Blandino R, Symul T, Ralph T, Lam P
Nature Communications 7, 1-7 (2016)

Estimation of output-channel noise for continuous-variable quantum key distribution
Thearle O, Assad S, Symul T
Physical Review A, 93, 042343, 6 (2016)

Quantum entanglement of angular momentum states with quantum numbers up to 10,010
Fickler R, Campbell G, Buchler B, Lam P, Zeilinger A
PNAS - Proceedings of the National Academy of Sciences of the United States of America 113, 13642-13647, (2016)

Maximizing device-independent randomness from a Bell experiment by optimizing the measurement settings
SM Assad, O Thearle, PK Lam
Phys. Rev. A 94, 012304

Experimental demonstration of Gaussian protocols for one-sided device-independent quantum key distribution
Nathan Walk, Sara Hosseini, Jiao Geng, Oliver Thearle, Jing Yan Haw, Seiji Armstrong, Syed M Assad, Jiri Janousek, Timothy C Ralph, Thomas Symul, Howard M Wiseman, Ping Koy Lam
Optica 3, 634-642 (2016)

Optomechanical magnetometry with a macroscopic resonator
Changqiu Yu, Jiri Janousek, Eoin Sheridan, David L McAuslan, Halina Rubinsztein-Dunlop, Ping Koy Lam, Yundong Zhang, Warwick P Bowen
Physical Review Applied 5, 044007 (2016)

Squeezing quadrature rotation in the acoustic band via optomechanics
Giovanni Guccione, Harry J Slatyer, André R R Carvalho, Ben C Buchler and Ping Koy Lam
Journal of Physics B: Atomic, Molecular and Optical Physics 49, 065401 (2016)

Synthesis of optical spring potentials in optomechanical systems
HJ Slatyer, G Guccione, YW Cho, BC Buchler, PK Lam
Journal of Physics B: Atomic, Molecular and Optical Physics 49, 125401 (2016)

Squeezed light from a diamond-turned monolithic cavity
A Brieussel, Y Shen, G Campbell, G Guccione, J Janousek, B Hage, BC Buchler, N Treps, Christian Fabre, FZ Fang, XY Li, T Symul, PK Lam
Optics Express 24, 4042-4056 (2016)

Highly efficient optical quantum memory with long coherence time in cold atoms
Y.-W. Cho, G. T. Campbell, J. L. Everett, J. Bernu, D. B. Higginbottom, M. T. Cao, J. Geng, N. P. Robins, P. K. Lam, and B. C. Buchler,
Optica  3, 100 (2016).

2015

A mirrorless spinwave resonator
O. Pinel, J. L. Everett, M. Hosseini, G. T. Campbell, B. C. Buchler and P. K. Lam
Scientific Reports 5, 17633 (2015).

Replicating the Benefits of Deutschian Closed Timelike Curves without Breaking Causality
X. Yuan, S. M. Assad, J. Thompson, J. Y. Haw, V. Vedral, T. C. Ralph, P. K. Lam, C. Weedbrook and M. Gu
npj Quantum Information 1, 15007 (2015)

Dual-rail optical gradient echo memory
D. B. Higginbottom, J. Geng, G. T. Campbell, M. Hosseini, M. T. Cao, B. M. Sparkes, J. Bernu, N. P. Robins, P. K. Lam and B. C. Buchler
Optics Express 23 24937 (2015).

Maximization of Extractable Randomness in a Quantum Random-Number Generator
J. Y. Haw, S. M. Assad, A. M. Lance, N. H. Y. Ng, V. Sharma, P. K. Lam, and T. Symul
Phys. Rev. Applied 3, 054004 (2015)

Nonlinear entanglement and its application to generating cat States.
Y Shen, S M Assad, N B Grosse, X Y Li, M D Reid, and P K Lam.
Phys Rev Lett 114, 100403 (2015).

Multipartite Einstein-Podolsky-Rosen steering and genuine tripartite entanglement with optical networks.
Seiji Armstrong, Meng Wang, Run Yan Teh, Qihuang Gong, Qiongyi He, Jiri Janousele, Hans-Albert Bachor, Margaret D Reid and Ping Koy Lam.
Nature Physics, 11 167 (2015)

2014

Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth.
J Geng, G T Campbell, J Bernu, D B Higginbottom, B M Sparkes, S M Assad, W P Zhang, N P Robins, P K Lam, and B C Buchler.
New J Phys, 16, 113053.

Asymmetric EPR entanglement in continuous variable systems
K. Wagner, J. Janousek, S. Armstrong, J.-F. Morizur, P. K. Lam and H.-A. Bachor
J. Phys. B: At. Mol. Opt. Phys. 47 225502 (2014)

Theoretical analysis of an ideal noiseless linear amplifier for Einstein-Podolsky-Rosen entanglement distillation
J. Bernu, S. Armstrong, T. Symul, T.C. Ralph and P.K. Lam
J Phys B-At Mol Opt,  47, 215503 (2014)

Multimode laser cooling and ultra-high sensitivity force sensing with nanowires
Mahdi Hosseini, Giovanni Guccione, Harry J. Slatyer, Ben C. Buchler & Ping Koy Lam
Nature Communications 5, 4663 (2014)

Configurable Unitary Transformations and Linear Logic Gates Using Quantum Memories
G. T. Campbell, O. Pinel, M. Hosseini, T. C. Ralph, B. C. Buchler, and P. K. Lam
Phys. Rev. Lett. 113, 063601 (2014).

Impact of backscattered light in a squeezing-enhanced interferometric gravitational-wave detector
S. S. Y. Chua et al.
Classical and Quantum Gravity, 31, 035017 (2014).

Measurement-based noiseless linear amplification for quantum communication
Helen M. Chrzanowski, Nathan Walk, Syed M. Assad, Jiri Janousek, Sara Hosseini, Timothy C. Ralph, Thomas Symul & Ping Koy Lam
Nature Photonics, 8 333 (2014).

Experimental verification of quantum discord in continuous-variable states
S. Hosseini, S. Rahimi-Keshari, J. Y. Haw, S. M. Assad, H. M. Chrzanowski, J. Janousek, T. Symul, T. C. Ralph and P. K. Lam
Journal of Physics B, 47, 025503 (2014).

2013

Gradient Echo Quantum Memory in Warm Atomic Vapor
Olivier Pinel, Mahdi Hosseini, Ben M. Sparkes, Jesse L. Everett, Daniel Higginbottom, Geoff T. Campbell, Ping Koy Lam and Ben C. Buchler
JoVE 2013 81, e5055 (2013).

Scattering-Free Optical Levitation of a Cavity Mirror
G. Guccione, M. Hosseini, S. Adlong, M. T. Johnsson, J. Hope, B. C. Buchler, and P. K. Lam
Phys. Rev. Lett. 111, 183001 (2013).

Generation and interferometric analysis of high charge optical vortices
Yong Shen, Geoff T Campbell, Boris Hage, Hongxin Zou, Ben C Buchler and Ping Koy Lam
Journal of Optics 15, 044005 (2013)

Experimental investigation of the transition between Autler-Townes splitting and electromagnetically-induced-transparency models
L, Giner, L. Veissier, B. Sparkes, A.S. Sheremet, A. and Nicolas, O.S. Mishina, M. Scherman, S. Burks, I. Shomroni, D.V. Kupriyanov, P.K. Lam, E. Giacobino and J. Laurat.
Phys. Rev. A,  87, 013823 (2013)

Gradient echo memory in an ultra-high optical depth cold atomic ensemble
B M Sparkes, J Bernu, M Hosseini, J Geng, Q Glorieux, P A Altin, P K Lam, N P Robins and B C Buchler
New Journal of Physics 15 085027 (2013)

Security of continuous-variable quantum cryptography with Gaussian postselection
N. Walk, T.C. Ralph, T. Symul, T and P.K. Lam.
Phys. Rev. A, 87, 020303 (2013)

2012

Memory-enhanced noiseless cross-phase modulation
M. Hosseini, S. Rebić, B. M. Sparkes, J. Twamley, B. C. Buchler and P.K. Lam
Nature Light Science and Applications, 1, e40 (2012)

Observing the operational significance of discord consumption
M. Gu, H.M. Chrzanowski, S.M. Assad, T. Symul, K. Modi, T.C. Ralph, V. Vedral and P.K. Lam
Nature Physics, 8, 671 (2012)

Programmable multimode quantum networks
S. Armstrong, J.F. Morizur, J. Janousek, B. Hage, N. Treps, P.K. Lam, H.A. Bachor
Nature Communications, 3, 1026 (2012)

Quantum benchmarking with realistic states of light
N. Killoran, M. Hosseini, B. C. Buchler, P. K. Lam, and N. Lütkenhaus
Phys. Rev. A, 86, 022331 (2012)

Spatial-mode storage in a gradient-echo memory
D. B. Higginbottom, B. M. Sparkes, M. Rancic, O. Pinel, M. Hosseini, P. K. Lam, and B. C. Buchler
Phys. Rev. A, 86, 023801 (2012)

Balanced homodyne detection of optical quantum states at audio-band frequencies and below
M. S. Stefszky, C. M. Mow-Lowry, S. S. Y. Chua, D. A. Shaddock, B. C. Buchler, H. Vahlbruch, A. Khalaidovski, R. Schnabel, P. K. Lam and D. E. McClelland
Classical and Quantum Gravity, 29, 145015 (2012)

Precision Spectral Manipulation: A Demonstration Using a Coherent Optical Memory
B. M. Sparkes, M. Hosseini, C. Cairns, D. Higginbottom, G. T. Campbell, P. K. Lam, and B. C. Buchler
Phys. Rev. X, 2, 021011 (2012)

Storage and manipulation of light using a Raman gradient-echo process
M Hosseini, B M Sparkes, G T Campbell, P K Lam and B C Buchler
J. Phys. B: At. Mol. Opt. Phys. 45, 124004 (2012)

Time- and frequency-domain polariton interference
G Campbell, M Hosseini, B M Sparkes, P K Lam and B C Buchler
New Journal of Physics, 14, 033022 (2012)

Generation of high-order optical vortices using directly machined spiral phase mirrors
G. Campbell, B. Hage, B. C. Buchler, and P. K. Lam
Applied Optics, 51, Issue 7, pp. 873-876 (2012)

2011

Backscatter tolerant squeezed light source for advanced gravitational-wave detectors
Sheon S. Y. Chua, Michael S. Stefszky, Conor M. Mow-Lowry, Ben C. Buchler, Sheila Dwyer, Daniel A. Shaddock, Ping Koy Lam, and David E. McClelland
Optics Letters, 36, Issue 23, pp. 4680-4682 (2011)

Photon-number discrimination without a photon counter and its application to reconstructing non-Gaussian states
H. M. Chrzanowski, J. Bernu, B. M. Sparkes, B. Hage, A. P. Lund, T. C. Ralph, P. K. Lam, and T. Symul
Phys. Rev. A, 84, 050302(R) (2011) 

A scalable, self-analyzing digital locking system for use on quantum optics experiments
B. M. Sparkes, H. M. Chrzanowski, D. P. Parrain, B. C. Buchler, P. K. Lam, and T. Symul
Rev. Sci. Instrum. 82, 075113 (2011)

Unconditional room-temperature quantum memory
M. Hosseini, G. Campbell, B. M. Sparkes, P. K. Lam and B. C. Buchler
Nature Physics, 7, 794 (2011)

Real time demonstration of high bitrate quantum random number generation with coherent laser light
T. Symul, S. M. Assad, and P. K. Lam
Appl. Phys. Lett., 98, 231103 (2011)

High efficiency coherent optical memory with warm rubidium vapour
M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam and B. C. Buchler
Nature Communications, 2,174 (2011)

An investigation of doubly-resonant OPOs and non-linear crystals for squeezing
M. Stefszky, C. Mow-Lowry, K. McKenzie, S. Chua, B.C. Buchler, T. Symul, D. McClelland and P.K. Lam
J. Phys. B: At. Mol. Opt. Phys. 44 015502 (2011)

2010

ac Stark gradient echo memory in cold atoms
B.M. Sparkes, M. Hosseini, G. Hétet, P.K. Lam and B. C. Buchler
Phys. Rev. A, 82, 043847 (2010)

Precision spectral manipulation of optical pulses using a coherent photon echo memory
B. C. Buchler, M. Hosseini, G. Hétet, B. M. Sparkes and P. K. Lam
Optics Letters, 35, 1091-1093 (2010)

2009

Spatial-state Stokes-operator squeezing and entanglement for optical beams.
M. T. L Hsu, W. P Bowen, P. K Lam.
Phys. Rev. A, 79 043825 (2009)

Distinguishability of Gaussian states in quantum cryptography using postselection
C. Weedbrook, D. J. Alton, T. Symul, P. K. Lam and T. C. Ralph
Physical Review A, 79, 062311 (2009)

Optical entanglement of co-propagating modes
J. Janousek, K. Wagner, J. F. Morizur, N. Treps, P. K. Lam, C. C. Harb and H.-A Bachor
Nature Photonics, 3, 399 (2009).

A coherent optical pulse sequencer for quantum applications
M. Hosseini, B. M. Sparkes, G. Hétet, J. Longdell, P. K. Lam and B. C. Buchler
Nature, 461, 241-245 (2009)

A bright future for quantum communications
T. C. Ralph and P.K. Lam
Nature Photonics, 3, 671 (2009)

2008

Multimodal Properties and Dynamics of Gradient Echo Quantum Memory.
G Hétet, J. J Longdell, M. J Sellars, P. K Lam, B. C Buchler.
Phys. Rev. Lett., 101, 203601 (2008)

Photon echoes generated by reversing magnetic field gradients in a rubidium vapor.
G Hétet, M Hosseini, B. M Sparkes, D Oblak, P. K Lam, B. C Buchler.
Optics Letters, 33, 2323-2325 (2008)

Single-atom detection with optical cavities.
R Poldy, B. C Buchler, J. D Close.
Phys. Rev. A, 78, 013640 (2008)

Delay of squeezing and entanglement using electromagnetically induced transparency in a vapour cell.
G Hètet, B. C Buchler, O Glöckl, M. T. L Hsu, A. M Akulshin, H. A Bachor, P. K Lam.
Opt Express, 16, 7369-7381 (2008)

Characterization of electromagnetically-induced-transparency-based continuous-variable quantum memories.
G Hetet, A Peng, M. T Johnsson, J. J Hope, P. K Lam.
Phys. Rev. A, 77 (1) 012323 (2008)

Electro-optic quantum memory for light using two-level atoms.
G Hetet, J. J Longdell, A. L Alexander, P. K Lam, M. J Sellars.
Phys. Rev. Lett., 100, 023601 (2008)

Entangling the spatial properties of laser beams.
K. Wagner, Ji. Janousek, V. Delaubert, H. Zou, C. Harb, Ni. Treps, J. F. Morizur, P. K. Lam, H. A Bachor.
Science, 321, 541-543 (2008)

Analytic treatment of controlled reversible inhomogeneous broadening quantum memories for light using two-level atoms.
J. J Longdell, G Hetet, P. K Lam, M. J Sellars.
Phys. Rev. A, 78, 032337 (2008)

Quantum cloning of continuous-variable entangled states.
C.Weedbrook, N. B Grosse, T. Symul, P.K. Lam, T. C. Ralph.
Phys. Rev. A, 77, 052313 (2008)

Observation of entanglement between two light beams spanning an octave in optical frequency.
N. B Grosse, S. Assad, M. Mehmet, R. Schnabel, T. Symul, P. K. Lam.
Phys. Rev. Lett. 100, 243601 (2008)

2007

Experimental demonstration of post-selection-based continuous-variable quantum key distribution in the presence of Gaussian noise.
Thomas Symul, Daniel J Alton, Syed M Assad, Andrew M Lance, Christian Weedbrook, Timothy C Ralph, Ping Koy Lam.
Phys. Rev. A, 76, 030303(R) (2007)

Technical limitations to homodyne detection at audio frequencies.
K. McKenzie, M. B. Gray, P. K. Lam, and D. E. McClelland.
Applied Optics, 46, 3389--3395, (2007)

Measuring photon antibunching from continuous variable sideband squeezing
N. B. Grosse, T. Symul, M. Stobinska, T. C. Ralph, and P. K. Lam
Phys. Rev. Lett., 98, 153603, (2007).

Tools for Multimode Quantum Information: Modulation, Detection, and Spatial Quantum Correlations
M. Lassen, V. Delaubert, J. Janousek, K. Wagner, H.-A. Bachor, P. K. Lam, N. Treps, P. Buchhave, C. Fabre, and C. C. Harb
Phys. Rev. Lett. 98, 083602 (2007)

Squeezed light for bandwidth-limited atom optics experiments at the rubidium D1 line.
G. Hétet, O. Glöckl, K. A. Pilypas, C. C. Harb, B. C. Buchler, H.-A. Bachor and P. K. Lam
Journal of Physics B, 40, 221, (2007).

2006

Quantum study of information delay in electromagnetically induced transparency
M. T. L. Hsu, G. Hétet, O. Glöckl, J. J. Longdell, B. C. Buchler, H.-A. Bachor, and P. K. Lam.
Physical Review Letters, 97, 183601, (2006).

Nonlinear phase matching locking via optical readout.
Kirk McKenzie, Malcolm B Gray, Ping Koy Lam, David E McClelland.
Opt Express, 14, 11256 (2006).

Effect of atomic noise on optical squeezing via polarization self-rotation in a thermal vapour cell
M. T. L. Hsu, G. Hétet, A. Peng, C. C. Harb, H.-A. Bachor, M. T. Johnsson, J. J. Hope, P. K. Lam, A. Dantan, J. Cviklinski, A. Bramati, and M. Pinard
Phys. Rev. A, 73, 023806 (2006)

Coherent-state quantum key distribution without random basis switching
C. Weedbrook, A. M. Lance, W. P. Bowen, T. Symul, T. C. Ralph and P. K. Lam
Phys. Rev. A, 73, 022316 (2006)

Harmonic Entanglement with second-order nonlinearity
N. B. Grosse, W. P. Bowen, K. McKenzie, and P. K. Lam
Phys. Rev. Lett., 96, 063601, (2006).

Spatial quantum effects with continuous-wave laser beams
H. --A. Bachor, V. Delaubert, C. C. Harb, M. T. L. Hsu, P. K. Lam, C. Fabre and N. Treps
J. Mod. Opt., 53, 597 (2006)

A complete quantum cryptographic system using a continuous wave laser
V. Sharma, A. M. Lance, T. Symul, C. Weedbrook, T. C. Ralph, and P. K. Lam
SPIE 6038, 03-1 (2006)

Squeezed state generation for interferometric gravitational-wave detection
K. McKenzie, M. B. Gray, S. Goßler, P. K. Lam and D. E. McClelland
Class. Quantum Grav., 23, S245 (2006)

Quantum-state engineering with continuous-variable postselection
A. M. Lance, H. Jeong, N. B. Grosse, T. Symul, T. C. Ralph, and P. K. Lam
Phys. Rev. A 73, 041801(R) (2006)

Quantum measurements of spatial conjugate variables: displacement and tilt of a Gaussian beam
V. Delaubert, N. Treps, C. C. Harb, P. K. Lam, and H. --A, Bachor
Opt. Lett., 31, 1537 (2006)

Generation of squeezing in higher order Hermite-Gaussian modes with an optical parametric amplifier
M. Lassen, V. Delaubert, C. C. Harb, P. K. Lam, N. Treps, and H. --A. Bachor
J. Euro. Opt. Soc., 1, 6003 (2006)

2005

Squeezing and entanglement delay using slow light
A. Peng, M. Johnsson, W. P. Bowen, P. K. Lam, H. -A. Bachor and J. J. Hope
Phys. Rev. A  71, 033809 (2005)

Continuous variable quantum state sharing via quantum disentanglement
A. M. Lance, T. Symul, W. P. Bowen, B. C. Sanders, T. Tyc, T. C. Ralph and P. K. Lam
Phys. Rev. A  71, 033814 (2005)

Continuous variable spatial entanglement for bright optical beams
M. T. L. Hsu, W. P. Bowen, N. Treps and P. K. Lam
Phys. Rev. A 72, 013802 (2005)

Quantum Noise Locking
K. McKenzie, E. E. Mikhailov, K. Goda, P. K. Lam, N. Grosse, M. B. Gray, N. Mavalvala and D. E. McClelland
J. Opt. B  7, S421 (2005)

Photothermal fluctuations as a fundamental limit to low-frequency squeezing in a degenerate optical parametric oscillator
K. Goda, K. McKenzie, E. E. Mikhailov, P. K. Lam, D. E. McClelland and N. Mavalvala
Phys. Rev. A  72, 043819 (2005) 

No-switching quantum key distribution using broadband modulated coherent light
A. M. Lance, T. Symul, V. Sharma, C. Weedbrook, T. C. Ralph and P. K. Lam
Phys. Rev. Lett. 95, 180503 (2005)

2004

A characterization of continuous variable entanglement
W. P. Bowen, R. Schnabel, P. K. Lam and T. C. Ralph
Phys. Rev. A  69, 12304 (2004)

Analysis of a sub-shot-noise power recycled Michelson interferometer
K. McKenzie, B. C. Buchler, D. A. Shaddock, P. K. Lam and D. E. McClelland
Classical and Quantum Gravity 21, S1037 (2004)

Tripartite quantum state sharing
A. M. Lance, T. Symul, W. P. Bowen, B. C. Sanders and P. K. Lam  Phys. Rev. Lett. 92, 177903 (2004)

Nano-displacement measurements using spatially multimode squeezed light
N. Treps, N. Grosse, W. P. Bowen, M. T. L. Hsu, A. Maître, C. Fabre, H.-A. Bachor and P. K. Lam J. Opt. B 6, S664 (2004)

Study of an electro-optic modulator capable of generating simultaneous amplitude and phase modulations
B. J. Cusack, B. S. Sheard, D. A. Shaddock, M. B. Gray and P. K. Lam
Appl. Opt. 43, 5079 (2004) 

Squeezed light at sideband frequencies below 100kHz from a single OPA
R. Schnabel, H. Vahlbruch, A. Franzen, S. Chelkowski, N. Grosse, H. -A. Bachor, W. P. Bowen, P. K. Lam and K. Danzmann
Opt. Commun. 240, 185 (2004)

Optimal optical measurement of small displacements
M. T. L. Hsu, V. Delaubert, P. K. Lam and W. P. Bowen  J. Opt. B. 6, 495 (2004)

Squeezing in the Audio Gravitational-Wave Detection Band
K. McKenzie, N. Grosse, W. P. Bowen, S. E. Whitcomb, M. B. Gray, D. E. McClelland and P. K. Lam
Phys. Rev. Lett. 93, 161105 (2004)

Quantum Cryptography Without Switching
C. Weedbrook, A. M. Lance, W. P. Bowen, T. Symul, T. C. Ralph, and P. K. Lam  Phys. Rev. Lett. 93, 170504 (2004)

2003

Stokes operator squeezed continuous variable polarization states
R. Schnabel, W. P. Bowen, N. Treps, T. C. Ralph, H.-A. Bachor and P. K. Lam
Phys. Rev. A 67, 012316 (2003)

Experimental investigation of criteria for continuous variable entanglement
W. P. Bowen, R. Schnabel, P. K. Lam and T. C. Ralph  Phys. Rev. Lett. 90, 043601 (2003)

Continuous variable (2,3) threshold quantum secret sharing schemes
A. M. Lance, T. Symul, W. P. Bowen, T. Tyc, B. C. Sanders and P. K. Lam  N. J. Phys. 5, 4.1-4.13 (2003)

Experimental investigation of continuous variable teleportation
W. P. Bowen, N. Treps, B. C. Buchler, R. Schnabel, T. C. Ralph, H. -A. Bachor, T. Symul and P. K. Lam
Phys. Rev. A 67, 032302 (2003)

Biased EPR entanglement and its application to teleportation
W. P. Bowen, P. K. Lam and T. C. Ralph  J. Mod. Opt. 50, 801 (2003)

Optical experiments beyond the quantum limit: squeezing, entanglement and teleportation
R. Schnabel, W. P. Bowen, N. Treps, B. C. Buchler, T. C. Ralph, P. K. Lam and H.-A. Bachor  Optics and Spectroscopy 94, 711 (2003)

Continuous variable polarization entanglement, experiment and analysis
W. P. Bowen, N. Treps, R. Schnabel, T. C. Ralph and P. K. Lam  J. Opt. B 5, S467 (2003)

A quantum laser pointer
N. Treps, N. Grosse, W. P. Bowen, C. Fabre, H.-A. Bachor and P. K. Lam
Science 301, 940 (2003)

Four modes of optical parametric operation for squeezed state generation
U. L. Andersen, B. C. Buchler, P. K. Lam, J. W. Wu, J. R. Gao and H. -A. Bachor
E. Phys. J. D 27, 181 (2003)

Teleportation of continuous variable polarization states
A. Dolinska, B. C. Buchler, W. P. Bowen, T. C. Ralph and P. K. Lam
Phys. Rev. A 68, 052308 (2003)

Unity gain and non-unity gain quantum teleportation
W. P. Bowen, N. Treps, B. C. Buchler, R. Schnabel, T. C. Ralph, T. Symul and P. K. Lam  IEEE selected topic quant. electron. 9, 1519 (2003)

2002

Polarization squeezing of continuous variable Stokes parameters
W. P. Bowen, R. Schnabel, H.-A. Bachor and P. K. Lam
Phys. Rev. Lett. 88, 093601 (2002))

Quantum nondemolition measurement with a nonclassical meter input and an electro-optic enhancement
U. L. Andersen, B. C. Buchler, H. -A. Bachor and P. K. Lam
J. Opt. B 4, 229 (2002)

Surpassing the standard quantum limit for optical imaging using non-classical multimode light
N. Treps, U. L. Andersen, B. C. Buchler, P. K. Lam, A. Maître, H. -A. Bachor and C. Fabre Phys. Rev. Lett. 88, 203601 (2002)

Generation of a phase flipped Gaussian mode for optical measurement
V. Delaubert, D. A. Shaddock, P. K. Lam, B. C. Buchler, H.-A. Bachor and D. E. McClelland
J. Opt. A 4, 393 (2002)

Experimental demonstration of a squeezing-enhanced power-recycled Michelson interferometer for gravitational wave detection
K. McKenzie, D. A. Shaddock, D. E. McClelland, B. C. Buchler and P. K. Lam  Phys. Rev. Lett. 88, 231102 (2002)

Squeezed singly resonant second-harmonic generation in periodically poled lithium niobate
M. J. Lawrence, R. L. Byer, M. M. Feyer, W. P. Bowen, P. K. Lam and H.-A. Bachor
J. Opt. Soc. Am. B 19, 1592 (2002) 

Recovery of continuous wave squeezing at low frequencies
W. P. Bowen, R. Schnabel, N. Treps, H.-A. Bachor and P. K. Lam
J. Opt. B 4, 421 (2002)

Experimental demonstration of continuous variable polarization entanglement
W. P. Bowen, R. Schnabel, N. Treps and P. K. Lam 
Phys. Rev. Lett. 89, 253601 (2002)

Réduction de bruit quantique spatiale et mesures de petits déplacements en optique N. Treps, A. Maitre, C. Fabre, U. Andersen, B. C. Buchler, P. K. Lam and H.-A. Bachor J. de. Physique IV, 12, 5-153 (2002)

Quantum information processing in optical images
C. Fabre, U. L. Andersen, H.-A. Bachor, B. C. Buchler, S. Gigan, P. K. Lam, A. Maitre and N. Treps  Superlattices & Microstructures 32, 323 (2002)

2001

Squeezing more from a quantum nondemolition measurement
Phys. Rev. A 65, 011803(R) (2001)B. C. Buchler, P. K. Lam, H.-A. Bachor, U. L. Andersen and T. C. Ralph

Generation of continuous variable Einstein-Podolsky-Rosen entanglement via the Kerr nonlinearity in an optical fibre
Ch. Silberhorn, P. K. Lam, O. Weiß, F. König, N. Korolkova, and G. Leuchs
Phys. Rev. Lett. 86, 4267 (2001)

2000

Kerr noise reduction and squeezing
A. G. White, P. K. Lam, D. E. McClelland, H.-A. Bachor and W. G. Munro
J. Opt. B. 2, 553 (2000)

Modulation-free control of a continuous-wave second harmonic generator
D. A. Shaddock, B. C. Buchler, W. P. Bowen, M. B. Gray and P. K. Lam
J. Opt. A. 2, 400 (2000)

Bandpass spectra of evanescent couplers with long period gratings
P. K. Lam, A. J. Stevenson and J. D. Love
Electron. Lett. 36, 967 (2000)

1999

Optimization and transfer of vacuum squeezing from an optical parametric oscillator
P. K. Lam, T. C. Ralph, B. C. Buchler, D. E. McClelland, H.-A. Bachor and J. Gao
J. Opt. B 1, 469 (1999)

Characterizing teleportation in optics
T. C. Ralph, P. K. Lam and R. E. S. Polkinghorne
J. Opt. B 1, 483 (1999)

Understanding and controlling laser intensity noise
T. C. Ralph, E. H. Huntington, C. C. Harb, B. C. Buchler, P. K. Lam, D. E. McClelland and H.-A. Bachor
Optical and Quantum Electronics, 31, 583 (1999)

Enhancement of quantum nondemolition measurements with an electro-optic feed-forward amplifier
B. C. Buchler, P. K. Lam and T. C. Ralph
Phys Rev. A 60, 4974 (1999)

Suppression of classical and quantum radiation pressure noise by electro-optic feedback
B. C. Buchler, M. B. Gray, D. A. Shaddock, T. C. Ralph and D. E. McClelland
Optics Letters. 24, 259 (1999)

1998

Teleportation with bright squeezed light
T. C. Ralph and P. K. Lam
Phys. Rev. Lett. 81, 5668 (1998)

Feedback control of laser intensity noise
B. C. Buchler, E. H. Huntington, C. C. Harb and T. C. Ralph
Phys Rev. A 57, 1286 (1998)

Squeezed light in a frontal-phase-modulated signal-recycled interferometer
V. Chickarmane, S. V. Dhurandhar, T. C. Ralph, M. B. Gray, H.-A. Bachor and D. E. McClelland
Phys Rev. A 57, 3898 (1998)

Noiseless electro-optic processing of optical signals generated with squeezed light
P. K. Lam, T. C. Ralph, E. H. Huntington, D. E. McClelland and H.-A. Bachor
Optics Express 2, 100 (1998)

Optical homodyne tomography of information carrying laser beams
J. W. Wu, P. K. Lam, M. B. Gray and H.-A. Bachor
Optics Express 3, 154 (1998)

Continuously-tunable doubly resonant optical parametric oscillator
M. Bode, P. K. Lam, I. Freitag, H. -A. Bachor, A. Tünnermann and H. Welling
Opt. Commun. 148, 117 (1998)

Noiseless independent signal and power amplification
E. H. Huntington, P. K. Lam, T. C. Ralph, D. E. McClelland and H. -A. Bachor
Opt. Lett. 23, 540 (1998)

High average power Q-switched second harmonic generation with diode-pumped Nd:YAG laser
P. K. Lam, I. Freitag, M. Bode, A. Tünnermann and H. Welling
Electron. Lett. 34, 666 (1998)

Quantum electro-optic control
Optics & Photonics News 9, 44 (1998)
T. C. Ralph, P. K. Lam, E. H. Huntington, B. C. Buchler, D. E. McClelland and H.-A. Bachor

Feedback control of the intensity noise of injection locked lasers
E. H. Huntingotn, B. C. Buchler, C. C. Harb, T. C. Ralph, D. E. McClelland and H.-A. Bachor
Opt. Commun 145, 359 (1998)